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  4. When chlorine water is exposed to sunlight, O2 is liberated. Hence

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Q. When chlorine water is exposed to sunlight, $O_2$ is liberated. Hence

The p-Block Elements - Part2

Solution:

$\underset{\text{Exposed to air}}{H_2O + Cl_2} \rightarrow + HCl + HClO$
$HClO \to HCl + [O]$ or $2HClO \to 2HCl + O_2$